I might be lucky with that nut for part fanArea51 wrote:Just upgraded from MK2 -> MK2S with the kit.
Had same problem with the M3 nut as grzegorz.k and used glue too. I see no other way as the nut is between two parts.
The M3 nut hole for the part fan is a little too big as well, but is accessible during assembly (no problem).
I would recommend printing and replacing the X axis motor and idler parts as well, as they has been upgraded with stiffer support for Z axis lead screws.
Upgrade instructions was easy to follow - thank you for a super kit.
Did you replace those 2 part you mentioned?